What roles do heredity and environment play in intelligence?
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Today, researchers generally agree that heredity and environment have an interactive influence on intelligence. Many researchers believe that there is a reaction range to IQ, which refers to the limits placed on IQ by heredity.Heredity places an upper and lower limit on the IQ that can be attained by a given person.
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The role of 'heredity' and 'environment' in intelligence.
The IQ which refers to intelligence is also influenced by hereditary. Based on ancestors the intelligence trait would have passed to offspring generation after generation. This is also influenced by environment and atmosphere the offspring belong to.
Evidence provides the details that 25% of variance of family environmental factor on childhood. Human behaviour and 'cognition', intelligence is 'complex trait' which is influenced by environmental factor.
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